The Shore durometer is a device for measuring the hardness of a material, typically of polymers.
Digital Shore hardness tester
Two inline skate wheels with different durometer – 85A and 83A
The Brinell hardness test measures the indentation hardness of materials. It determines hardness through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several
Shore durometer
…US patent 2421449, J. G. Zuber, "Hardness Measuring Instrument", issued 1947-06-03 Brinell hardness test – Brinell scale of hardness Bloom (test) – Test to measure strength of a gel…
A hand-portable, hydraulic Brinell hardness tester
A close up image of the indenter of a Brinell hardness tester and an indentation
A Brinell calibration block used for the indirect verification of the accuracy of Brinell testing machines (photo courtesy of Foundrax Engineering Products).
An indentation in steel caused by a tungsten carbide sphere under 29,420 Newton load, showing the pile up around the indentation consisting of displaced material that has been forced sideways